Question 945845: Let U = {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}
List the elements in the set (A U B)'
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! First find set A U B
This is just the set of A and B combined and any duplicates are tossed
A U B = {q, s, u, w, y} U {q, s, y, z} = {q, s, u, w, y, z}
So A U B = {q, s, u, w, y, z}
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Now look at set U = {q, r, s, t, u, v, w, x, y, z}
Use a red pen or something to mark all of the letters that are in set U that are also in set A U B = {q, s, u, w, y, z}
U = {q, r, s, t, u, v, w, x, y, z}
They will scratched out and erased
{q, r, s, t, u, v, w, x, y, z}
Leaving this behind
{r, t, v, x}
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Therefore,
(A U B)' = {r, t, v, x}
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